Re gearing a Jeep (who is the go to shop for swapping gearing in axles)?

[newracer]

Great thread, I've been wondering about this a while too.

I have 37s on my 4.5in 2012 4-door. I got 4.10 gears from the factory which work great 90% of the time. But I-70 up/down the mountains is a huge pain, as it chokes near Vail pass / Eisenhower every time. I'm planning on 4.88 but am worried about highway use as I still drive it 80mph on the 470 quite a bit.

There's a guy in parker who is supposed to be cheap. But I've heard Crawlertech for a good (and expensive) job.

I've thought about trying a cold air intake first, since it would be a much cheaper upgrade. Just need a little bit more cool air to make it up and over the mountain.

You should go to 5.13.

[USMC88-93]

You should go to 5.13.

That link you posted on Jeepforum with the video of the Black Bear roll over is dead "too much traffic" is it posted elsewhere?